Glass cutter



L. LEFEBVRE Nov. .4, 1947.

GLASS CUTTER 2 Sheets-Sheet 1 Filed Jan. 8, 1945 Inventor zkclizly Nov. 4, 1947.

GLASS CUTTER Filed Jan. 8, 1945 2 Sheets-Sheet 2 Zzzqzv QZQQOZZFQ Attorneys Patented Nov; 4, 1 947 N l TED -S TATE-S E' N T I C E 2,430,349 -ennss CUTTER Lucien Lefbvre, :Tini'fnins; Ontario, Ganada "hpplication 'Jalnuai y 8, 1945, S'r'ial'N 055711889 6- Claims.

'JIhis "invention relates to "al -glass 'cutter, and

'vision of a device adapted for'the cutting of glass in=.sheets br'th'e like by scoring a' l-ine simultane- 'ousl'y and evenly 'on both sides.

-A fur-ther objecteof thisinverltion is thel pi 'o- =vision ofa device particularly adapted for -use'in fth'e cutting of such a glass I as safety glass profv-ided with a layer of Celluloid through the m'idd'le, wherein if the! glass were scored on one" side'only -thesafet layer would preclude an even cutting -01 breaking of the glass.

A still further object is" theiprovision' 'of means -in sucha' device whereby therglassm'ay beevenly --seored on both sides regardlesso'f the shape-of -cut desired.

A still further object is theprovision of means for producing'anequal pressure Simultaneously -on cutters operable on opposite sidesof the glass.

An additional object is the provision of means in such a device for varying the tension sotexerted.

Asia-ill furtherobject is theprovision ofan at.

:of "elements, arrangenient-s of -'parts,-features-of -construction, all-as will bemore fully pointed out hereinafter and disclosed in the accompanying drawings, wherein there isshown apreferredem- "-bodiment of this inventive concept.

"In the drawings:

Figure 1 is a top'plan view'of one form-of de vice embodying this invention, certain aparts thereof being broken away.

Figure 2-is a fragmentary-side elevational-vi-ew -of the device shown in Figure 1, enlarged.

Figure-"3 is an enlarged sectional view taken substantially along the line 3-3 of'F igure 'l.

Figure 4 is an enlarged sectional view-taken substantially alongthe 1ine'"4-4' of Figure 1.

"Figure 5 is a sectional view taken substantially alongtheline-E- E Of'FigureB.

*Figure fi is' an enlarged s'ection'al view taken eubstantiallyalongtheline-fi fi of Figure-2.

Figure 7 is a perspective'viewof a construc- --tional detail, and

Figure 8 is -a sectional view'of an attachment adaptedto be utilized in conjunction with the device.

Like reference -numerals refer -to like *parts throughout the-several views ofthe'drawings;

-'In theidrawingsgia frame generally indicated. at -h) *is comprised of tw'o *opposite members xgen- 'erally indi'catedat=l=l"and l2 including extending iawportions r3 *an'd "1'4, respectively, b-odyportions F5 and *IB, respectively, frame stops H and H 8, respe'ctivelygdesi'gned-to preclude the passa o'fmembers i3-' a*n'd 'MLpast the point Where they are in substantial horizor'ital alignment, for a *purpose to be described hereinafter, and handle ip'ortions" I 9- ancl 20;-respectively.

Members 'l'l and "ll-=aresubstantially identical -with"theexceptionof the fact that as shown in Figure *4, -b'ddyportionl=5=of member H is pro- "yidd With-a tOngueJ-lhadahted to fit within a --groove "22'formed in body "portion l6 of member I2, the opposite sides=of--;groove22=and tongue 2| ibei'ng :provided 'with registering apertures through whichis passedaipivot pin-23 headed as "at-"H andi l "adapted to hold the two frame members in 'pivotal related assembly. Addition- "ally-portion rs of frame member! I is provided With "a transversely extending lug--25 havingan -"aperture "-26 -ther-ethrough, while:portion id of frame memberl-2 has secured thereto, at a point -oppositelug--25, a housing crguide generally indicatedat 30.

Housingilll is-secured-as by welding to a flange 3l secured'toextending member l4, and is pro- --vided witha recess 42 therein and two longitudinally disposedslots-43 and-44 extending in parallelism l substantially theentire length of housing --and through flange 3|. Positioned within housing-30 is-a nut or follower generally indieated=at GS-(seeFigure '7 comprised of --a 1 mylindricahportion46 and apair of oppositely disposed -protruding-1ugs4'l and 48 adapted to engagewithinslots" 43a-nd"44, respectively. Nut :is -also-provided with: an extending portion 49 threaded as at 50,and= an internal threaded bore --5I. A :screW or adjusting rod is adapted to engaged-n threaded bore 5i, and is'provided with a smooth-extremity-52 adapted to extend outwardly through a-s-uitable recess 53 in the endof the casing,;-a loeking-c0l1ar-54 being-secured to --the=shank of the screw to hold the parts securely -i-n position. knurled' knob 51 is adapted to be ssecured asby a set screw 58 to the extending portion of shank 52. Thus it will be seen that -rotative-movement of knob 51- occasions trans- Verse movementof nut 45 within recess '42 in housing 30.

-A suitable-collarEll-secured as by a set screw- 6| to -the-outer extremity-of-bolt55 precludes the possibility 1 of completely; unthreading the nut 45 therefrom, unless the collar 'is removed.

A tension spring 62 is threadedly engaged with threaded portion 50 of extending part 49 of nut 45 and has its opposite end secured in recess 26 of lug 25 of member l3. Thus it will be seen that the spring 62 biases the members [3 and I4 toward each other, the extent of such biasing being limited by the stops I1 and I8, and the tension exerted by the spring 62 being regulated by the position of nut 45 within the housing 3!].

The outer extremities of members l3 and I4 have positioned thereon identical members 65 and 66 oppositely disposed thereto. 66 are glass cutter holders and, as shown in Figure 6, each provided with a transverse bore 61 through which set screws 68 are adapted to extend to engage suitable recesses or depressions in the extremities of members l3 and [4 to hold the parts securely in related assembly. Members 65 and 66 are also provided with additional bores preferably of rectangular cross-sectional configuration within which are adapted to be positioned conventional hand glass cutters or scoring members H, the same being secured in position as by set screws 12 extending into the bores 10. From the foregoing it will now be seen that when it is desired to score opposite sides of a piece of glass for cutting, the handles l9 and 20 are pressed together separating the cutting edges of the cutters H and the device positioned over the pane of glass to be out. When the handles are released the tension of the spring 62 causes the cutting edges to bear tightly against the opposite surfaces of the pane of glass, and the device may be guided in any desired pattern by means of the handles to produce any desired score line on opposite surfaces of the pane of glass.

Under certain conditions, as when it is desired to cut a line a relatively great distance from the edge of the plate of glass the length of members l3 and 14 may be insuflicient to permit the cutters H to be so extended. Under such conditions an extension generally indicated at 15 (see Figure 8) is utilized. Extension 15 is comprised of a rod or shaft 16 of any suitable length and has secured to one end thereof as by welding or the like, a sleeve H of a diameter adapted to surround members I3 and I4, and is provided with set screws 18 engaging suitable threaded recesses therein. Depressions or detents 80 are provided adjacent the opposite end of rod 76 positioned to receive the ends of set screws 68. The manner of use of extension 15 should now be obvious, set screws 68 being released and members 65 and 66 being removed from extending portions [3 and I4. Sleeves 11 are then placed in position over the end members I3 and M, the set screws 18 tightened, and members 65 and 65 positioned on the opposite ends of rods 16 and held in position by set screws 68. Thus it will be seen that the length .of arms i3 and I4 may be effectively extended to any desired position to perform a cutting operation on any desired size and sheet of glass at any desired distance from the edge.

From the foregoing it will now be seen that there is herein provided a device accomplishing all of the objects of this invention and others including many advantages of great practical utility.

As many embodiments may be made of this inventive concept, and as many modifications may be made in the embodiment hereinbefore described and shown in the accompanying drawings, it is to be understood that all matter herein is to be interpreted merely as illustrative and not in a limiting sense.

Members 65 and Iclaim:

1. In a device of the character described, in combination, a pair of extending members, means securing said members in pivotal relation, glass cutting means carried at the extremities of said members, a housing carried by one of said members, a movable nut in said housing, a tension spring having one end secured to said nut, and the other end to the other of said members, and means for moving said nut in said housing to vary the tension exerted by said spring.

2. A glass cutting and scoring tool composed of a pair of pivoted jaws, handle means for operatlng said jaws and disposed on the opposite side of the pivot therefrom, glass cutting means secured to the adjacent extremities of said jaws, spring means for biasing said jaws together, a guide upon one jaw, a follower movable in said guide, said sprin means being secured to said follower and to the other jaw, and means including an adjusting rod, rotatably and nonreciprocatingly mounted in said guide for moving said follower in said guide to adjustably tension said spring.

3. A glass cutting and scoring tool composed of a pair of pivoted jaws, handle means for operating said jaws and disposed on the opopsite side of the pivot therefrom, glass cutting means secured to the adjacent extremities of said jaws, spring means for biasing said jaws together, a guide upon one jaw, a follower movable in said guide, said spring means being secured to said follower and to the other jaw, and means including an adjusting rod, rotatably and nonreciprocatingly mounted in said guide for moving said follower in said guide to adjustably tension said spring, said glass cutting means including a cutter holder carried by each jaw, a glass scoring member supported by each holder and arranged in aligned, opposite arrangement to each other for simultaneously marking opposite surfaces of a glass body interposed therebetween.

4. A glass cutting and scoring tool composed of a pair of pivoted jaws, handle means for operating said jaws and disposed on the opposite side of the pivot therefrom, glass cutting means secured to the adjacent extremities of said jaws, spring means for biasing said jaws together, a guide upon one jaw, a follower movable in said guide, said spring means being secured to said follower and to the other jaw, and means including an adjusting rod, rotatably and nonreciprocatingly mounted in said guide for moving said follower in said guide to adjustably tension said spring, said glass cutting means including a cutter holder carried by each jaw, a glass scoring member supported by each holder and arranged in aligned, opposite arrangement to each other for simultaneously marking opposite surfaces of a glass body interposed therebetween, each holder having a first bore for receiving said extremity and a second bore, perpendicular thereto for receiving said glass scoring member.

5. A glass cutting and scoring tool composed of a pair of pivoted jaws, handle means for operating said jaws and disposed on the opposite side of the pivot therefrom, glass cutting means secured to the adjacent extremities of said jaws, spring means for biasing said jaws together, a guide upon one jaw, a follower movable in said guide, said spring means being secured to said follower and to the other jaw, and means including an adjusting rod, rotatably and nonreciprocatingly mounted in said guide for moving said follower in said guide to adjustably tension said spring, said guide including a housing carried by said one jaw, spaced longitudinal slots in the Wall of said housing comprisin guide openings, said follower consisting of a cylindrical member having spaced lugs engageable and slidable in said guide slots, an axial threaded bore in said follower, said adjusting rod having screw threaded engagement with said bore.

6. A glass cutting and scoring tool composed of a pair of pivoted jaws, handle means for operating said jaws and disposed on the opposite side of the pivot therefrom, glass cutting means secured to the adjacent extremities of said jaws, spring means for biasing said jaws together, a guide upon one jaw, a follower movable in said guide, said spring means being secured to said follower and to the other jaw, and means including an adjusting rod, rotatably and nonreciprocatingly mounted in said guide for moving said follower in said guide to adjustably tension said spring, said glass cutting means including a cutter holder carriedjoy each jaw, a glass scoring member supported by each holder and arranged in aligned, opposite arrangement to each other for simultaneously marking opposite surfaces of a glass body interposed therebetween, said guide including a housing carried by said one jaw, spaced longitudinal slots in the wall of said housing comprising guide openings, said follower consisting of a cylindrical member having spaced lugs engageable and slidable in said guide slots, an axial threaded bore in said follower, said adjusting rod having screw threaded engagement with said bore.

- LUCIEN' LEFEBVRE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,710,898 Rowley Apr. 30, 1929 1,807,619 Boush June 2, 1931 2,302,174 Boicey et al. Nov. 17, 1942 1,999,594 Owen Apr. 30, 1935 FOREIGN PATENTS Number Country Date 3,607 Great Britain 1891 

